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Light emitting diode lighting device

A technology of light-emitting diodes and lighting devices, applied in lighting devices, components of lighting devices, cooling/heating devices of lighting devices, etc., can solve problems such as low brightness, short life, and more expensive, and achieve high output power and high Durability, high brightness effect

Inactive Publication Date: 2011-03-16
YOUNG DONG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of an LED lighting device in which many LED bulbs are densely arranged, heat generated by each LED bulb causes a major problem in the LED lighting device
[0007] Although LED lighting fixtures have initially much longer lifespans than existing lamps, LED lighting fixtures suffer from frequent failures and short lifetimes due to the large amount of heat generated by numerous LED bulbs
Therefore, LED lighting installations have no choice but to use low-power LED bulbs and a small number of LED bulbs
In addition, since LED lighting devices are much lower in brightness and more expensive than existing lamps such as incandescent lamps, mercury lamps, or fluorescent lamps, it is difficult to widely use LED lighting devices as lighting devices.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0051] Figures 1 to 3 The LED lighting device according to the first embodiment of the present invention is explained. The present LED lighting device can replace existing lighting devices (such as halogen lamps or incandescent lamps).

[0052] The LED lighting device of this embodiment is equipped with a heat sink 30 . The cooling fan 20 is installed on the upper surface of the radiator 30 . A thermocouple 40 is installed on the lower surface of the heat sink 30 . In addition, a temperature sensor 50 is installed on the lower surface of the heat sink 30 .

[0053] Furthermore, the LED lighting device of the present embodiment is equipped with a main frame 10 to form an appearance. The aforementioned components are accommodated in the main frame 10 .

[0054] Meanwhile, a light assembly 77 is installed at the lower portion of the main frame 10 . The lamp assembly 77 includes a metal PCB 60 and a plurality of LED bulbs 70 mounted on the lower surface of the metal PCB 60 ...

no. 2 approach

[0062] Figure 4 An LED lighting device according to a second embodiment of the present invention is described. The LED lighting device can replace existing lighting devices (such as street lamps, floodlights, etc.).

[0063] The LED lighting device according to the second embodiment includes a main frame 10 having a wide flat plate shape, the middle portion of which is opened. The radiator 30 is installed in the middle opening of the main frame 10 . A plurality of thermocouples 40 and temperature sensors are installed at the lower portion of the radiator 30 . The fixing plate 65 is installed on the lower part of the thermocouple 40 . A metal PCB 60 is mounted on the lower surface of the fixing plate. A lamp assembly 77 having LED bulbs 70 each provided with a lens is mounted on the lower surface of the metal PCB 60 .

[0064] A switched mode power supply (SMPS) 15 is provided on one side of the lower surface of the main frame 10 . The fixing device 87 is provided on the...

no. 3 approach

[0069] Figure 5 An LED lighting device according to a third embodiment of the present invention is described. The present LED lighting device can replace existing lighting devices such as security lanterns.

[0070] The LED lighting device according to the third embodiment includes a main frame 10 supporting the following components. The radiator 30 is provided on the upper portion of the main frame 10 . The cooling fan 20 is provided on the upper side of the radiator 30 .

[0071] In addition, a thermocouple 40 , a thermostat 51 , a ceramic resistance 12 and the like are mounted on the lower surface of the radiator 30 . Ceramic resistors 12 are commonly used in LED lighting fixtures and function to prevent LEDs from being damaged by voltage drops.

[0072] The fixing plate 65 is provided at the lower portion of the main frame 10 . A plurality of lamp assemblies 77 each including a metal PCB 60 and an LED bulb 70 are installed on the lower surface of the fixing plate 65 ...

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PUM

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Abstract

Provided is a light emitting diode (LED) lighting device, which includes a main frame, at least one metal printed circuit board (PCB) provided at the main frame and having at least one LED bulb installed on a lower surface thereof, a heat sink provided on an upper side of the metal PCB, absorbing heat from the LED bulbs, and dissipating the heat into the air, at least one thermoelectric element provided on a lower side of the heat sink and having a heat absorbing part at a lower portion thereof and a heat radiating part at an upper portion thereof, a temperature sensor measuring temperature of the heat sink or the metal PCB, and at least one cooling fan located on an upper portion or a side portion of the heat sink and inducing heat radiating from the heat sink to an outside to cool the heat sink.

Description

technical field [0001] The present invention relates to a Light Emitting Diode (LED) lighting device that efficiently dissipates heat from an LED bulb to ensure high output power, high brightness, and high durability. Background technique [0002] The invention of the lighting device called the incandescent lamp is beneficial to mankind because it frees the mankind from the darkness and thus enables the mankind to work at night. Therefore, human civilization develops more rapidly. [0003] Since then, humans have tried to develop lighting devices that can emit brighter light while consuming less power. As a result, many lighting devices (such as fluorescent lamps, energy-saving lamps, halogen lamps, etc.) have been invented and used in our daily life so far. [0004] With recent advances in light emitting diode (LED) elements that emit light when current flows, there has been interest in exploiting the features of LED elements for such lighting devices. LED elements emit ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V17/10F21V23/00F21V29/00F21V29/02F21Y101/02
CPCF21V29/225F21V29/02F21K9/135F21V29/407F21V29/2293F21V29/004F21V29/262F21V29/2231F21Y2101/02F21V29/54F21V29/713F21V29/763F21V29/773F21V29/83F21K9/232F21Y2115/10F21V29/15F21V29/677
Inventor 裴炳岩
Owner YOUNG DONG TECH CO LTD